California Attorney General Kamala Harris says the state's system for seizing illegal guns is "smart and effective." Stephen Barton, a survivor of the Aurora theater shooting who works for Mayors Against Illegal Guns, believes it's a "reasonable" approach. Anderson Cooper asks Harris why the program, which has led to the confiscation of more than 10,000 guns since 2007, is currently underfunded.

Former White House physician Dr. Mariano says her concern about New Jersey Gov. Christie's weight is not about politics. Anderson Cooper asked Mariano about Christie's response to her original statement. He told her, in part, to "shut up" about his health unless she wants to examine him and review his medical history.

There are about 40,000 illegally owned guns in California. They're owned by people from all walks of life who have been ordered to turn in their firearms for a number of different reasons, but they haven’t come forward. So special agents from California's Justice Department’s Bureau of Firearms are going after them to seize the weapons.

California tracks gun owners who have convictions using a database system that’s unique to the state. It’s helped them confiscate thousands of guns. CNN’s Randi Kaye saw firsthand how law enforcement uses the program to find and seize illegal firearms.